Next you will find my own function that helps me to convert the base64 coded networkAddress in awk scripts. The output of this function presents only the IP address in a dotted decimal format . I hope it can help. It was written for a french company.


function decode(chaine){

# Cette fonction est limitee a la conversion des netAddress IP des serveurs
# Novell stockees dans la base eDirectory en format Base64.
# Nous ne tenons pas compte ici des 4 premiers octets recuperes, qui precise
# le port (NCP) et le transport (UDP, TCP, IP) qui importe peu dans cette procedure.

BASE64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"

resultat = ""
nextPosDec = 1

while (length(chaine) > 0){
# recuperation par groupe de 4 codes Base64
for (pos=1; pos
# Transcription du code en valeur numerique selon Base64
for (pos=1; pos
numCode[pos] = index(BASE64,code[pos]) - 1
if (numCode[pos]
}
# Transcription des 4 codes (6 bits) en 3 octets (8 bits) valeurs
# decimales
octetDec[nextPosDec + 2] = (numCode[3] % 4) * 64 + numCode[4]
octetDec[nextPosDec + 1] = (numCode[2] % 16) * 16 + int(numCode[3] / 4)
octetDec[nextPosDec] = (numCode[1] * 4) + int(numCode[2] / 16)

nextPosDec += 3

chaine = substr(chaine, 5)
}

resultat = octetDec[5] "." octetDec[6] "." octetDec[7] "." octetDec[8]

return resultat
}

Hi, I would like to know if is there a way to provide the inverse value, I mean, I got the IP address, and I wanna compare with the value into networkAddress to see if the IP being passed to me matches with the one into NDS.

Is that possible?

Thanks!

Thanks for the C# example, works like a charm!

This took me a good while to figure out, so I hope that the community finds it useful. Please feel free to e-mail me if you have comments or suggestions...

// with a connected and bound ldap connection ldapConn...

LdapEntry server = ldapConn.Read(serverDN); // find server in tree

// retrieve and decode the server's network address

LdapAttribute serverNetAddr = server.getAttribute("networkaddress");

// loop through the multivalued networkaddress field
foreach(sbyte[] addrBytes in serverNetAddr.ByteValueArray) {

   // get the first character in the line which indicates type
   char type = (char)addrBytes[0];

   if(type == '9') { // only interested in TCP address
       string serverTCPAddr = "";
       for(int i=(addrBytes.Length-4); i<addrBytes.Length; i++) { // last four bytes are the ip address
      byte b = unchecked((byte)addrBytes[i]); // convert sbyte to byte
         serverTCPAddr = serverTCPAddr + b; // append value to string
         if(i>0 && i<(addrBytes.Length - 1))
         serverTCPAddr = serverTCPAddr + "."; // brute force the dots
    }

  }

}

$addr = "";
$addrtype = intval(substr($networkaddress, 0, 1));

// throw away bytes 0 and 1 which should be the addrtype and the "#" separator
$networkaddress = substr($networkaddress, 2);

$addrtypes = array('IPX', 'IP', 'SDLC', 'Token Ring', 'OSI', 'AppleTalk', 'NetBEUI', 'Socket', 'UDP', 'TCP', 'UDP6', 'TCP6', 'Reserved (12)', 'URL', 'Count');

$len = strlen($networkaddress);

if ($len > 0) {
for ($i=0; $i
$byte = substr($networkaddress, $i, 1);
$addr .= ord($byte);

if ($addrtype == 1){ // dot separate IP addresses...
$addr .= ".";
}
}

if ($addrtype == 1) {
// strip last period from end of $addr
$addr = substr($addr, 0, strlen($addr)-1);
}
}
else {
$addr .= "address not available.";
}

printf($addrtypes[$addrtype] . ": " . $addr);